Doepfer A-135 QVCA / VCMIX

$145.42 Price Tier: Budget

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Page last updated Jul 03, 2026

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$145.42 3 available New

$125.51 4 available Used

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Average Price: $135

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Price Tier

In the Modular Synthesizers category, Doepfer A-135 QVCA / VCMIX is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

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Description

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http://www.analoguehaven.com/doepfer/a135-1/

Module a-135-1 is a quad voltage controlled mixer. it is made of 4 independent linear vca's. the vca outputs are mixed to a common output. for each vca the following inputs and controls are available: audio input with attenuator, control voltage input with attenuator, gain (pre-amplification). the vca's are realized with high-quality cem vca's (cem3381 for version 1 and ssm2164 for version 2).

Applications: voltage controlled mixing of up to 4 audio signals with separate control voltages (e.g. delivered by lfo's, adsr's, random, shepard generator, midi-to-cv interface or other control voltage sources). in connection with the morphing-controller a-144 the soft fade-over of 4 audio signals with only one control voltage is possible.

Product specs

Brand	Doepfer
Model	A-135-1 QVCA / VCMIX Quad Linear VCA and Voltage Controlled Mixer
Year	2010s
Made In	Germany
Categories	Eurorack Modules and Cases, Synth Modules
Horizontal Pitch	18HP
Modular Synth Format	Eurorack
Synth Module Function	Mixer, VCA

FAQs

What is the primary function of the Doepfer A-135 QVCA / VCMIX module?: The Doepfer A-135 QVCA / VCMIX functions as a quad linear VCA and voltage-controlled mixer, allowing users to control the amplitude of audio or CV signals in a modular synthesizer setup.
How many channels does the Doepfer A-135 QVCA / VCMIX offer?: The Doepfer A-135 QVCA / VCMIX offers four independent channels, enabling versatile mixing and amplitude control within an Eurorack system.
Is the Doepfer A-135 QVCA / VCMIX compatible with other Eurorack modules?: Yes, the Doepfer A-135 QVCA / VCMIX is designed for the Eurorack modular format, making it compatible with other Eurorack modules for seamless integration into your setup.
What is the horizontal pitch (HP) size of the Doepfer A-135 QVCA / VCMIX?: The Doepfer A-135 QVCA / VCMIX has a horizontal pitch size of 18HP, which is important for planning your Eurorack case layout.
Can the Doepfer A-135 QVCA / VCMIX be used for both audio and CV signals?: Yes, the Doepfer A-135 QVCA / VCMIX can process both audio and control voltage (CV) signals, making it versatile for various synthesis applications.